1 / 9

ENTC 395

ENTC 395. Lecture 7b. Today. Closed loop control Definitions Response parameters Examples. Closed Loop Control System. A more detailed look at a closed loop control system:. Controller: Definitions. Set point: Signal indicating desired operating point

meadow
Download Presentation

ENTC 395

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. ENTC 395 Lecture 7b

  2. Today • Closed loop control • Definitions • Response parameters • Examples

  3. Closed Loop Control System A more detailed look at a closed loop control system:

  4. Controller: Definitions Set point: Signal indicating desired operating point Summing block: Creates error signal Amplifier: Converts error signal to a powered command that affects system response Actuator: Shifts response of system, hydraulic cylinder, DC motor,etc. Sensor: Device that converts system output to a feedback signal.

  5. Simple Switching Controller Control systems can be as simple as an automated on/off switching device.

  6. PID Controllers Controller response may be a function of three components of the error signal KP = Proportional gain KI = Integral gain KD = Derivative gain

  7. Parameter Effects The effect of the Ks on a system are summarized below. Actual relations are more complex. Ks are not independent.

  8. Transient System Response When you design a controller you may look for parameters that give you a desired transient system response. • Delay time, td • Rise time, tr • Peak time, tp • Overshoot, Mp • Settling time,ts

  9. Transient definitions • Delay time, td: _____________________________________ _____________________________________ • Rise time, tr: _____________________________________ _____________________________________ • Peak time, tp _____________________________________ _____________________________________ • Overshoot, Mp _____________________________________ _____________________________________ • Settling time, _____________________________________ts _____________________________________

More Related